There is a reason Sarah Chalke is not an adrenalin junkie and it involves hang-gliding and a broken ankle.

The “How I Met Your Mother” star (for a season or two, at least) appeared on “Busy Tonight” on Thursday and talked about the time she was persuaded to go hang-gliding in South America with her “Scrubs” co-stars.

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Chalke was the self-described “nervous nellie” of the group, but she put on a brave face as they climbed to the top of a cliff.

“The instructor was like, ‘I’ve done this for 25 years, nothing has ever gone wrong, you’re going to be fine,'” she explained.

With her mind put at ease, Chalke did the jump only to see the aforementioned instructor, who had jumped just before her, crash onto the beach, snapping both his hang-glider and his ankle.

“And we’re still in the air! We still have to land!” she exclaimed. “He was okay, it was just a broken ankle… and a snapped hang-glider.”

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Host Busy Philipps said she’d never put herself through something like that but Chalke explained it’s a good way to show her daughter to push herself out of her comfort zone.

“You know what is getting out of my comfort zone? Doing this f**king talk show,” Philipps said.

Philipps also helped Chalke set up her Instagram account and discussed falling victim to the same Hollywood hacker.